xref: /aosp_15_r20/external/flatbuffers/go/lib.go (revision 890232f25432b36107d06881e0a25aaa6b473652)

package flatbuffers

// FlatBuffer is the interface that represents a flatbuffer.
type FlatBuffer interface {
	Table() Table
	Init(buf []byte, i UOffsetT)
}

// GetRootAs is a generic helper to initialize a FlatBuffer with the provided buffer bytes and its data offset.
func GetRootAs(buf []byte, offset UOffsetT, fb FlatBuffer) {
	n := GetUOffsetT(buf[offset:])
	fb.Init(buf, n+offset)
}

// GetSizePrefixedRootAs is a generic helper to initialize a FlatBuffer with the provided size-prefixed buffer
// bytes and its data offset
func GetSizePrefixedRootAs(buf []byte, offset UOffsetT, fb FlatBuffer) {
	n := GetUOffsetT(buf[offset+sizePrefixLength:])
	fb.Init(buf, n+offset+sizePrefixLength)
}

// GetSizePrefix reads the size from a size-prefixed flatbuffer
func GetSizePrefix(buf []byte, offset UOffsetT) uint32 {
	return GetUint32(buf[offset:])
}